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High-temperature resistance up to 250 °C in continuous service, with excellent short-term peak tolerance.
Outstanding resistance to aggressive automotive fluids, including modern low-viscosity engine oils and transmission fluids.
Low compression set performance, ensuring long-term sealing integrity under dynamic and static conditions.
Excellent resistance to ozone, weathering, and UV radiation without requiring antiozonant additives.
Good processability on standard rubber mixing and extrusion equipment, supporting efficient high-volume manufacturing.
Automotive fuel and oil system seals, including injector O-rings and turbocharger gaskets.
Aerospace hydraulic and lubrication system components exposed to Skydrol® and MIL-PRF-83282 fluids.
Industrial static and dynamic seals in chemical processing equipment handling hot acids and solvents.
Oil & gas downhole elastomeric parts, such as packer elements and valve seats operating in sour (H₂S) environments.
Advanced powertrain applications requiring compliance with OEM specifications for low-permeability, high-durability fluoroelastomers.
| Chemical Type | Fluoroelastomer (FKM), vinylidene fluoride–hexafluoropropylene–tetrafluoroethylene terpolymer |
| Product Form | Uncured gum stock, bale form (approx. 25 kg) |
| Appearance | Light tan to amber, homogeneous solid elastomer with smooth surface |
| Primary Applications | High-performance static and dynamic seals in demanding fluid and thermal environments |
| Key Features | High heat resistance, low compression set, broad chemical resistance, excellent fluid compatibility |
| Benefits | Extended service life, reduced maintenance frequency, compliance with stringent OEM and industry standards |
| Curing System Compatibility | Standard diamine and bisphenol-based curatives; optimized for conventional press vulcanization |
Q1: What distinguishes Solvay Tecnoflon P 959 from other FKM elastomers?
A: Tecnoflon P 959 is a peroxide-curable, low-viscosity fluoroelastomer specifically engineered for high-temperature resistance and excellent chemical stability in aggressive environments. Its unique polymer architecture provides enhanced processability in demanding molding applications while maintaining robust resistance to fuels, oils, and polar solvents.
Q2: Is Tecnoflon P 959 suitable for dynamic sealing applications?
A: Yes — its balanced combination of low compression set, good resilience, and thermal stability makes it well-suited for dynamic seals in automotive, aerospace, and industrial fluid systems where sustained performance under cyclic stress and elevated temperatures is required.
Q3: What types of curatives are recommended for Tecnoflon P 959?
A: Tecnoflon P 959 is formulated for peroxide curing. Commonly used systems include bisphenol-based or diamine-based co-agents, selected based on the desired balance of scorch safety, cure rate, and final physical properties. Selection should be validated through compound development and rheometry testing.
Q4: Can Tecnoflon P 959 be blended with other fluoroelastomers or polymers?
A: It can be compounded with certain other FKM grades to tailor processing behavior or cost-performance profiles, but compatibility must be confirmed experimentally. Blending with non-fluorinated elastomers is generally not recommended due to polarity mismatch and potential phase separation.
Q5: What are typical processing considerations for Tecnoflon P 959?
A: Due to its low Mooney viscosity, Tecnoflon P 959 offers improved filler dispersion and mold flow compared to higher-viscosity FKMs. However, careful attention to mixing temperature, shear history, and storage conditions is advised to maintain optimal scorch safety and prevent premature crosslinking during processing.
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